Used as a stabilizer in polymers and organic materials due to its ability to scavenge free radicals, particularly in high-temperature processing. Acts as an intermediate in the synthesis of specialty chemicals, including antioxidants and UV stabilizers for plastics. Its bulky tert-butyl groups provide steric hindrance, enhancing thermal stability in formulations. Also employed in research as a model compound for studying reaction kinetics and substitution effects in aromatic systems.